Has the code that Dmitry wrote that Doug describes below been submitted yet?
I know we were waiting for v 1.2, but that's done now.
Thanks
--Peter
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Dmitry Serebrennikov [dmitrys@earthlink.net] has implemented a substantial
extension to Lucene which should help folks doing this sort of research. It
provides an explicit vector representation for documents. This way you can,
e.g., retrieve a number of documents, efficiently sum their vectors, then
derive a new query from the sum. This code was posted to the list a long
while back, but is now out of date. As soon as the 1.2 release is final,
and Dmitry has time, he intends to merge it into Lucene.
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